| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| // Regression test for dart2js, where the optimizer was too aggressive |
| // about parameter types of closures. |
| |
| class A { |
| Function f; |
| A(this.f); |
| _do() => f(1); |
| } |
| |
| main() { |
| int invokeCount = 0; |
| closure(a) { |
| if (invokeCount++ == 1) { |
| Expect.isTrue(a is int); |
| } |
| } |
| |
| closure('s'); |
| new A(closure)._do(); |
| Expect.equals(2, invokeCount); |
| } |